2128383461 has 4 divisors (see below), whose sum is σ = 2197041024. Its totient is φ = 2059725900.

The previous prime is 2128383443. The next prime is 2128383463. The reversal of 2128383461 is 1643838212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2128383461 - 2¹⁰ = 2128382437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128383463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34328735 + ... + 34328796.

It is an arithmetic number, because the mean of its divisors is an integer number (549260256).

Almost surely, 2^2128383461 is an apocalyptic number.

It is an amenable number.

2128383461 is a deficient number, since it is larger than the sum of its proper divisors (68657563).

2128383461 is an equidigital number, since it uses as much as digits as its factorization.

2128383461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68657562.

The product of its digits is 55296, while the sum is 38.

The square root of 2128383461 is about 46134.4064771619. The cubic root of 2128383461 is about 1286.3227731897.

The spelling of 2128383461 in words is "two billion, one hundred twenty-eight million, three hundred eighty-three thousand, four hundred sixty-one".